Maximizing Opera window creates a white bar on the top

Every other time I maximize an Opera window it creates this weird white bar on top, to fix it I have to double click twice on the title bar. It's annoying because every time I move a window to another monitor it automatically get re-maximized which results in this white bar appearing. Is there a fix?

I'm a new Opera user (within the past month), so I can't really say whether or not it's an update that's causing it.

Software:

Opera - 53.0.2907.37

Windows 10 Pro - Version 1803

I did recently update from Windows version 1709 to 1803. I'm not 100% sure, but it feels like a new issue that I didn't see on the previous version. I know Microsoft made a lot of changes as far as graphics and scaling go, so perhaps that could be a source.